编辑/etc/docker/daemon.json 增加：
{
"registry-mirrors": [
"https://dockerhub.azk8s.cn",
"https://docker.mirrors.ustc.edu.cn",
"https://registry.docker-cn.com"
]
}
重启：
# systemctl daemon-reload # systemctl restart docker
graylog 官方文档:
graylog: https://docs.graylog.org/v1/docs/file-locations mongo DB： https://docs.mongodb.com/upcoming/tutorial/install-mongodb-on-red-hat/ elasticsearch: https://docs.graylog.org/docs/centos
zabbix 官方文档：
https://www.zabbix.com/cn/download?zabbix=5.0&os_distribution=centos&os_version=7&db=mysql&ws=apache
